sensitive_character = '你好'       #敏感词库
test_sentence = input('请输入一段话:')
for  line in sensitive_character:  #遍历输入的字符是存在敏感词库中
    if line in test_sentence:      #判断是否包含敏感词
    test_sentence = test_sentence.replace(line,'*')
print(test_sentence)